Issue #23 featured the (Jülich Ozone Sonde Intercomparison Experiment) JOSIE-SHADOZ 2017 experiment in Jülich, Germany, in which ~15 SHADOZ operators, sponsors, and Co-Is participated. Issue #24 featured a visit to the SHADOZ Hilo, Hawaii, site by Anne Thompson and Bryan Johnson. The visit took place 16-20 April 2018.